n | a(n) |
---|---|
1 | 2 |
2 | 2 |
3 | 25 |
4 | 118 |
5 | 417 |
6 | 746 |
7 | 2906 |
8 | 10899 |
9 | 31616 |
10 | 88860 |
11 | 304443 |
12 | 1013184 |
13 | 3033869 |
14 | 9608917 |
15 | 30808108 |
16 | 97784400 |
17 | 307889267 |
18 | 971517454 |
19 | 3088012323 |
20 | 9793418941 |
21 | 30915299775 |
22 | 97797652156 |
23 | 310274504503 |
24 | 981649179185 |
25 | 3105621771879 |
[2,2,25,118,417,746,2906,10899,31616,88860,304443, 1013184,3033869,9608917,30808108,97784400, 307889267,971517454,3088012323,9793418941, 30915299775,97797652156,310274504503,981649179185, 3105621771879] |